[jira] [Commented] (NUTCH-2375) Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce

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[jira] [Commented] (NUTCH-2375) Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce

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    [ https://issues.apache.org/jira/browse/NUTCH-2375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16124880#comment-16124880 ]

ASF GitHub Bot commented on NUTCH-2375:
---------------------------------------

Omkar20895 commented on a change in pull request #188: NUTCH-2375 Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce
URL: https://github.com/apache/nutch/pull/188#discussion_r132838270
 
 

 ##########
 File path: src/java/org/apache/nutch/segment/SegmentMerger.java
 ##########
 @@ -174,47 +174,51 @@
           // ignore
         }
       }
-      final SequenceFileRecordReader<Text, Writable> splitReader = new SequenceFileRecordReader<>(
-          job, (FileSplit) split);
+      final SequenceFileRecordReader<Text, Writable> splitReader = new SequenceFileRecordReader<>();
 
-      try {
-        return new SequenceFileRecordReader<Text, MetaWrapper>(job, fSplit) {
+      return new SequenceFileRecordReader<Text, MetaWrapper>() {
+
+        public MetaWrapper wrapper;
 
-          public synchronized boolean next(Text key, MetaWrapper wrapper)
-              throws IOException {
-            LOG.debug("Running OIF.next()");
+        @Override
+        public synchronized boolean nextKeyValue()
+            throws IOException, InterruptedException {
+          try {
+            LOG.debug("Running OIF.nextKeyValue()");
 
-            boolean res = splitReader.next(key, w);
+            splitReader.initialize(split, context);
+            this.initialize(split,context);
+            boolean res = splitReader.nextKeyValue();
+            wrapper = this.getCurrentValue();
 
 Review comment:
   Hi @lewismc I think the TestSegmentMerger is failing here with a NullPointerException and I think that it is because the sequenceFileRecordReader here is not being intialized as expected. Please correct me if I am wrong. Thanks.
 
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> Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce
> ----------------------------------------------------------------------------------
>
>                 Key: NUTCH-2375
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2375
>             Project: Nutch
>          Issue Type: Improvement
>          Components: deployment
>            Reporter: Omkar Reddy
>
> Nutch is still using the deprecated org.apache.hadoop.mapred dependency which has been deprecated. It need to be updated to org.apache.hadoop.mapreduce dependency.



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